Koga family
The Koga family is a Japanese aristocratic family, a branch of the Minamoto clan that traces its descent from Emperor Murakami. The Koga lineage was classified as kuge prior to the Meiji Restoration, then as a kazoku lineage. Wikipedia
Founder: Minamoto no Masazane
Home province: Yamashiro Province; Modern Fushimi-ku, Kyoto
Parent house: Murakami Genji (Minamoto clan)